EP 3068049 B1 20180613 - ACCOUSTIC WAVE ELEMENTS, ANTENNA DUPLEXERS AND ELECTRONIC DEVICES
Title (en)
ACCOUSTIC WAVE ELEMENTS, ANTENNA DUPLEXERS AND ELECTRONIC DEVICES
Title (de)
AKUSTISCHE WELLENELEMENTE, ANTENNEN-DUPLEXER UND ELEKTRONISCHE VORRICHTUNGEN
Title (fr)
ÉLÉMENTS D'ONDE ACOUSTIQUE, DISPOSITIFS ÉLECTRONIQUES ET DUPLEXEURS D'ANTENNE
Publication
Application
Priority
US 201562132046 P 20150312
Abstract (en)
[origin: EP3068049A2] An acoustic wave element comprising a lithium tantalate substrate having the Euler angles (Õ, ¸, È), a first component Õ satisfying 10°‰¤ Õ ‰¤ 50°; and an electrode disposed on the lithium tantalate substrate and configured to excite a main acoustic wave of wavelength », the electrode having a density Á M satisfying Á M ‰¥ Á Ti where Á Ti represents a density of titanium (Ti), and a thickness h M of the electrode satisfies 0.141 x exp(-0.075Á M )» ‰¤ h M ‰¤ 0.134». Embodiments of the present disclosure minimize a thickness of the electrode and suppress a spurious Rayleigh wave signal.
IPC 8 full level
H03H 9/02 (2006.01); H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01)
CPC (source: CN EP KR US)
H01P 1/20 (2013.01 - KR); H01P 1/205 (2013.01 - KR); H01P 1/213 (2013.01 - KR); H03H 9/0222 (2013.01 - CN KR); H03H 9/02559 (2013.01 - CN EP US); H03H 9/02834 (2013.01 - EP US); H03H 9/14538 (2013.01 - CN); H03H 9/25 (2013.01 - US); H03H 9/6433 (2013.01 - CN); H03H 9/6496 (2013.01 - EP US); H03H 9/725 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3068049 A2 20160914; EP 3068049 A3 20161130; EP 3068049 B1 20180613; CN 105978524 A 20160928; JP 2016171571 A 20160923; JP 2020061742 A 20200416; JP 7005579 B2 20220204; KR 102526570 B1 20230426; KR 20160110243 A 20160921; SG 10201601943W A 20161028; US 10097159 B2 20181009; US 2016268997 A1 20160915
DOCDB simple family (application)
EP 16159654 A 20160310; CN 201610137318 A 20160311; JP 2016048065 A 20160311; JP 2019217819 A 20191202; KR 20160029454 A 20160311; SG 10201601943W A 20160314; US 201615067304 A 20160311